What if a building was shaped like a Hot air balloon?

What if a building was shaped like a hot air balloon with floor plates and people moving around within it. Would it be able to stand? Would the vertical load be to much? If not how would one go about doing something like that?

Look up Jules Verne for floating residences: Especially the filmed versions. FIVE WEEKS IN A BALLOON and my favorite MASTER OF THE WORLD w Vincent Price and Chls Brons

Victorian visionaries had many ideas like you suggest. And even into the 1920's there were several schemes , Soviet futurism, expressionist projects. Bucky Fuller designed a famous floating city levitated by its own hot air. Science fiction is full of them. Space stations anyone?

Have you ever been in a Hot Air Balloon? They don't stay up for long because of the fuel needed to keep them afloat. I think your thinking more like a helium filled Balloon. I helped launch one of them along time ago (1970's) My brother in-law was designing hot air balloons at the time. The two guys going for a ride were fighting before they even got air bound, got caught in a weather front and ended up crash landing somewhere close to the gulf of Mexico. My understanding they were blaming one another for the crash landing when the Ambulance picked them up and took them to the Hospital.